Assertion: Greater the value of van der Waal's constant 'a' greater is the liquefaction of gas.
Reason: 'a' indirectly measures the magnitude of attractive forces between the molecules.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
Explanation:
Both assertion and reason are true and reason is the correct explanation of assertion. Considering the attractive force pressure in ideal gas equation (PV = nRT) is corrected by introducing a factor of an2/V2 where a is van der waal constant.